小弯曲半径钛管差温推弯成形工艺研究
Research on Differential Temperature Push-Bending Forming Process of Titanium Tube with Small Bending Radius
摘要: 针对小弯曲半径钛管弯曲成形问题，采用差温推弯成形方法开展了弯曲半径为0.9 D (D为管材外径)的小弯曲半径钛管弯曲成形试验。研究分析了成形弯管的外观质量、壁厚分布规律和关键区域材料的微观组织特点。结果表明差温推弯成形方法能够有效应用于成形弯曲半径为0.9 D的小弯曲半径钛合金管，成形弯管表面质量好、壁厚减薄少、弯曲外侧材料组织变细小。
Abstract:
In order to solve the problem of bending forming of titanium tubes with small bending radius, the bending forming test of titanium tubes with small bending radius of 0.9 D (D is the outer diameter of the tube) was carried out by using differential temperature push-bending forming method. The appearance quality, wall thickness distribution pattern and microstructure characteristics of the material in the critical region of the formed tube were studied and analyzed. The results show that the differential temperature push-bending forming method can be effectively used to form titanium alloy tubes with small bending radius of 0.9 D, with good surface quality, less wall thickness thinning, and smaller material microstructure on the outside of the bend.
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